--- service: a.root-servers.net start-period: '2016-04-27T00:00:00Z' end-period: '2016-04-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5560691739 dns-udp-queries-received-ipv6: 337921959 dns-tcp-queries-received-ipv4: 73050853 dns-tcp-queries-received-ipv6: 5292979 dns-udp-responses-sent-ipv4: 5560402128 dns-udp-responses-sent-ipv6: 337529731 dns-tcp-responses-sent-ipv4: 64082108 dns-tcp-responses-sent-ipv6: 2022311